Dolev 4press Bar Punch Calibration

Author/Submitter: A. Posner (06/06/96)
Document Released: 06/06/96

Product Family: Imagesetters / Platesetters

This procedure is aimed to help in the aligning calibration of the bar punch.

1. Before starting this procedure make sure that the width ( W ) start exposure parameter in the machine is 35. It is in "SETUP" --> Service --> Plotter setting
2. Make sure that the pivot parameters are H=360 , W=20.
   ( "SETUP"--> Service --> Punch Setting and in your punch system).
3. Create Grid with the size: W=540 , H= ( Film width - 22 ). For example if the film width is 736 the H will be 714.
4. In the expose dialogue set: Markers to YES and Punch to YES.
5. Expose One separation.
6. This should result in all the grid with markers and punched holes. If it does not please change the Height and the Width in the "START EXPOSE"\
7. After the full grid plus the markers was achieved , change in the expose format in the punch section from YES to the punch system that was define in the machine punch setting
   
       Example:
       If you choose the Stoesser punch system ( 1 ), you have to choose in the punch formats system number 1 .

Make sure that in the punch format:

1. the alignment will be set to ML ( If it is not so not all the full image will appear ).
2. choose the available punch system which was defined in the machine.
3. Set the offsets to 0,0 , Save&exit the format and expose the grid.
4. At this point in the procedure we need to get all the images with the markers on the film. In order to achieve this the punch offsets in the Punch Format need to be changed.
   
   Example:
   If the grid needs to be moved up by 4mm and left by 2mm add 4mm to the W and reduce the H by 2mm.
   
5. After the full image was achieved you can set the offsets in the punch format to 0,0 by changing the pivot position in the machine. Do this by adding the offsets values to the pivot values in the machine.
   
   Example:
   Offsets in the punch format H=2, W=12 , Pivot parameter in the machine are H=360, W=20.
   Change the offsets in the punch format to W=0, H=0 and in the machine the pivot parameters will be changed to H=362, W=32.
   
6. To make the final alignment, set the pivot to be in the center of the image height. Expose two grids with the align to punch function. Place the two films, emulsion to emulsion, and then change the height offset by the difference between the two divided to 2.